Physics 173 Internet Question of the Week


The Questions

February 23 - February 27, 1998

Question #1:

For this week's search question you will visit a site titled "Ask Jeeves" (http://www.askjeeves.com). Jeeves is the Internet butler who has quite a talent for helping people find answers to questions. You will ask Jeeves two questions and use his advice to find the answers. The process is simple: 1) you type the question, 2) Jeeves returns several URLs of pages on the Internet on which the answer can probably be found, 3) you use the links to the pages to find the answer. Jeeves is particulary gifted at finding answers to specific types of questions. Some questions (such as "What are the questions on Mr. Henderson's pop-quiz this Friday?") do not typically yield intelligent answers. Good questions to ask Jeeves include:

For two points, use Jeeves to find answers to two questions (1 pt./answer). One of the questions can be one such as those found above. The other question has to be one which you develop yourself. To earn the two points on this search question, do the following:

  1. State the question as you asked it to Jeeves.
  2. Identify the page to which you went to successfully find the answer.
  3. Write the answer to the question.
  4. Repeat steps 1-3 for the second question.
  5. Have some fun with "Ask Jeeves" (and be sure to bookmark the page for later use).

 

Question #2:

A 429-kg roller coaster car is mvoing at 25.0 m/s through the bottom of a near-circular loop. The radius of the loop is 21.8 m. Draw a free-body diagram showing the forces acting upon the roller coaster car at the bottom of the loop. Use the diagram amd cicular motion equations to determine the acceleration, net force and normal force acting upon the car. PSAYW

 


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